Tonic will turn on, but then won't turn off

If you are having trouble with the Tonic Pad Player turning on and then not turning off, you'll want to check out the "Scale Parameter". This issue appears to be a MainStage bug tied to a particular type of Scale Parameter setting for the on button mappings. For a minority of users the Scale Parameter is being slightly altered to what should be a perfectly fine function (stepped) but it causes the mouse to not toggle off for whatever reason.

To fix this, you'll want to:

1. Go to MainStage at the concert level and click the Tonic On button once.
2. Locate the "Latch" mapping in the inspector and click on it to view.
3. Ensure that the "Scale Parameter" for that mapping is a diagonal line as in the picture (if it's not, click the box as in the second picture to set it to that).